Trunking Cisco CUCM 9.0 with UCS 500

[VAbr AVib]

In one of our branch offices use Cisco UCS-500 for local IP telephony and PRI. Now we would like to integrate this system to our main offices so that we dial all the 4-digit extensions.

Is it possible to trunk Cisco UCS 500 with CUCM 9.0. ?

[Aditya Gupta]

Hi

Yes, can you can create a trunk b/w ucs500 series and cucm 9.0 and use 4-digit site to site dialing.

It will be similar to configuring a h323  or sip trunk between cucm and gateway.

Regards

Aditya Gupta

[VAbr AVib]

Thanks Aditya

[VAbr AVib]

I am able to make calls from CUCM to UCS, but not the other way. The call will disconnect as soon as the RTP session starts. Also I am not able to watch the debugging logs on telnet session in UCS.

[Terry Cheema]

Provide the below two:

1) Config of your UC500

2) Turn on and capture the output of debug voip ccapi inout and post it here.

-Terry

Please rate all helpful posts

[Aditya Gupta]

Hi

Seems you have codec negotiation problem when you are making calls from UCS to CUCM

. Can you post your UCS config here.

Maybe you have logging buffered enabled on your UCS as a result of which logs are not displayed on screen over telent session.

Regards

Aditya Gupta

[VAbr AVib]

I have enabled "Enable inbound Faststart" on CUCM H323 Gateway configuration. It started working now.

Thanks for all your valuable inputs.